Let's roll up our sleeves and solve this. We have 453 and we're going to multiply it by 220, essentially adding 453 to itself 220 times.
Step 1: 0 + 453 = 453
Step 2: 453 + 453 = 906
Step 3: 906 + 453 = 1359
Step 4: 1359 + 453 = 1812
Step 5: 1812 + 453 = 2265
Step 6: 2265 + 453 = 2718
Step 7: 2718 + 453 = 3171
Step 8: 3171 + 453 = 3624
Step 9: 3624 + 453 = 4077
Step 10: 4077 + 453 = 4530
Step 11: 4530 + 453 = 4983
Step 12: 4983 + 453 = 5436
Step 13: 5436 + 453 = 5889
Step 14: 5889 + 453 = 6342
Step 15: 6342 + 453 = 6795
Step 16: 6795 + 453 = 7248
Step 17: 7248 + 453 = 7701
Step 18: 7701 + 453 = 8154
Step 19: 8154 + 453 = 8607
Step 20: 8607 + 453 = 9060
Step 21: 9060 + 453 = 9513
Step 22: 9513 + 453 = 9966
Step 23: 9966 + 453 = 10419
Step 24: 10419 + 453 = 10872
Step 25: 10872 + 453 = 11325
Step 26: 11325 + 453 = 11778
Step 27: 11778 + 453 = 12231
Step 28: 12231 + 453 = 12684
Step 29: 12684 + 453 = 13137
Step 30: 13137 + 453 = 13590
Step 31: 13590 + 453 = 14043
Step 32: 14043 + 453 = 14496
Step 33: 14496 + 453 = 14949
Step 34: 14949 + 453 = 15402
Step 35: 15402 + 453 = 15855
Step 36: 15855 + 453 = 16308
Step 37: 16308 + 453 = 16761
Step 38: 16761 + 453 = 17214
Step 39: 17214 + 453 = 17667
Step 40: 17667 + 453 = 18120
Step 41: 18120 + 453 = 18573
Step 42: 18573 + 453 = 19026
Step 43: 19026 + 453 = 19479
Step 44: 19479 + 453 = 19932
Step 45: 19932 + 453 = 20385
Step 46: 20385 + 453 = 20838
Step 47: 20838 + 453 = 21291
Step 48: 21291 + 453 = 21744
Step 49: 21744 + 453 = 22197
Step 50: 22197 + 453 = 22650
Step 51: 22650 + 453 = 23103
Step 52: 23103 + 453 = 23556
Step 53: 23556 + 453 = 24009
Step 54: 24009 + 453 = 24462
Step 55: 24462 + 453 = 24915
Step 56: 24915 + 453 = 25368
Step 57: 25368 + 453 = 25821
Step 58: 25821 + 453 = 26274
Step 59: 26274 + 453 = 26727
Step 60: 26727 + 453 = 27180
Step 61: 27180 + 453 = 27633
Step 62: 27633 + 453 = 28086
Step 63: 28086 + 453 = 28539
Step 64: 28539 + 453 = 28992
Step 65: 28992 + 453 = 29445
Step 66: 29445 + 453 = 29898
Step 67: 29898 + 453 = 30351
Step 68: 30351 + 453 = 30804
Step 69: 30804 + 453 = 31257
Step 70: 31257 + 453 = 31710
Step 71: 31710 + 453 = 32163
Step 72: 32163 + 453 = 32616
Step 73: 32616 + 453 = 33069
Step 74: 33069 + 453 = 33522
Step 75: 33522 + 453 = 33975
Step 76: 33975 + 453 = 34428
Step 77: 34428 + 453 = 34881
Step 78: 34881 + 453 = 35334
Step 79: 35334 + 453 = 35787
Step 80: 35787 + 453 = 36240
Step 81: 36240 + 453 = 36693
Step 82: 36693 + 453 = 37146
Step 83: 37146 + 453 = 37599
Step 84: 37599 + 453 = 38052
Step 85: 38052 + 453 = 38505
Step 86: 38505 + 453 = 38958
Step 87: 38958 + 453 = 39411
Step 88: 39411 + 453 = 39864
Step 89: 39864 + 453 = 40317
Step 90: 40317 + 453 = 40770
Step 91: 40770 + 453 = 41223
Step 92: 41223 + 453 = 41676
Step 93: 41676 + 453 = 42129
Step 94: 42129 + 453 = 42582
Step 95: 42582 + 453 = 43035
Step 96: 43035 + 453 = 43488
Step 97: 43488 + 453 = 43941
Step 98: 43941 + 453 = 44394
Step 99: 44394 + 453 = 44847
Step 100: 44847 + 453 = 45300
Step 101: 45300 + 453 = 45753
Step 102: 45753 + 453 = 46206
Step 103: 46206 + 453 = 46659
Step 104: 46659 + 453 = 47112
Step 105: 47112 + 453 = 47565
Step 106: 47565 + 453 = 48018
Step 107: 48018 + 453 = 48471
Step 108: 48471 + 453 = 48924
Step 109: 48924 + 453 = 49377
Step 110: 49377 + 453 = 49830
Step 111: 49830 + 453 = 50283
Step 112: 50283 + 453 = 50736
Step 113: 50736 + 453 = 51189
Step 114: 51189 + 453 = 51642
Step 115: 51642 + 453 = 52095
Step 116: 52095 + 453 = 52548
Step 117: 52548 + 453 = 53001
Step 118: 53001 + 453 = 53454
Step 119: 53454 + 453 = 53907
Step 120: 53907 + 453 = 54360
Step 121: 54360 + 453 = 54813
Step 122: 54813 + 453 = 55266
Step 123: 55266 + 453 = 55719
Step 124: 55719 + 453 = 56172
Step 125: 56172 + 453 = 56625
Step 126: 56625 + 453 = 57078
Step 127: 57078 + 453 = 57531
Step 128: 57531 + 453 = 57984
Step 129: 57984 + 453 = 58437
Step 130: 58437 + 453 = 58890
Step 131: 58890 + 453 = 59343
Step 132: 59343 + 453 = 59796
Step 133: 59796 + 453 = 60249
Step 134: 60249 + 453 = 60702
Step 135: 60702 + 453 = 61155
Step 136: 61155 + 453 = 61608
Step 137: 61608 + 453 = 62061
Step 138: 62061 + 453 = 62514
Step 139: 62514 + 453 = 62967
Step 140: 62967 + 453 = 63420
Step 141: 63420 + 453 = 63873
Step 142: 63873 + 453 = 64326
Step 143: 64326 + 453 = 64779
Step 144: 64779 + 453 = 65232
Step 145: 65232 + 453 = 65685
Step 146: 65685 + 453 = 66138
Step 147: 66138 + 453 = 66591
Step 148: 66591 + 453 = 67044
Step 149: 67044 + 453 = 67497
Step 150: 67497 + 453 = 67950
Step 151: 67950 + 453 = 68403
Step 152: 68403 + 453 = 68856
Step 153: 68856 + 453 = 69309
Step 154: 69309 + 453 = 69762
Step 155: 69762 + 453 = 70215
Step 156: 70215 + 453 = 70668
Step 157: 70668 + 453 = 71121
Step 158: 71121 + 453 = 71574
Step 159: 71574 + 453 = 72027
Step 160: 72027 + 453 = 72480
Step 161: 72480 + 453 = 72933
Step 162: 72933 + 453 = 73386
Step 163: 73386 + 453 = 73839
Step 164: 73839 + 453 = 74292
Step 165: 74292 + 453 = 74745
Step 166: 74745 + 453 = 75198
Step 167: 75198 + 453 = 75651
Step 168: 75651 + 453 = 76104
Step 169: 76104 + 453 = 76557
Step 170: 76557 + 453 = 77010
Step 171: 77010 + 453 = 77463
Step 172: 77463 + 453 = 77916
Step 173: 77916 + 453 = 78369
Step 174: 78369 + 453 = 78822
Step 175: 78822 + 453 = 79275
Step 176: 79275 + 453 = 79728
Step 177: 79728 + 453 = 80181
Step 178: 80181 + 453 = 80634
Step 179: 80634 + 453 = 81087
Step 180: 81087 + 453 = 81540
Step 181: 81540 + 453 = 81993
Step 182: 81993 + 453 = 82446
Step 183: 82446 + 453 = 82899
Step 184: 82899 + 453 = 83352
Step 185: 83352 + 453 = 83805
Step 186: 83805 + 453 = 84258
Step 187: 84258 + 453 = 84711
Step 188: 84711 + 453 = 85164
Step 189: 85164 + 453 = 85617
Step 190: 85617 + 453 = 86070
Step 191: 86070 + 453 = 86523
Step 192: 86523 + 453 = 86976
Step 193: 86976 + 453 = 87429
Step 194: 87429 + 453 = 87882
Step 195: 87882 + 453 = 88335
Step 196: 88335 + 453 = 88788
Step 197: 88788 + 453 = 89241
Step 198: 89241 + 453 = 89694
Step 199: 89694 + 453 = 90147
Step 200: 90147 + 453 = 90600
Step 201: 90600 + 453 = 91053
Step 202: 91053 + 453 = 91506
Step 203: 91506 + 453 = 91959
Step 204: 91959 + 453 = 92412
Step 205: 92412 + 453 = 92865
Step 206: 92865 + 453 = 93318
Step 207: 93318 + 453 = 93771
Step 208: 93771 + 453 = 94224
Step 209: 94224 + 453 = 94677
Step 210: 94677 + 453 = 95130
Step 211: 95130 + 453 = 95583
Step 212: 95583 + 453 = 96036
Step 213: 96036 + 453 = 96489
Step 214: 96489 + 453 = 96942
Step 215: 96942 + 453 = 97395
Step 216: 97395 + 453 = 97848
Step 217: 97848 + 453 = 98301
Step 218: 98301 + 453 = 98754
Step 219: 98754 + 453 = 99207
Step 220: 99207 + 453 = 99660

So, 453*220 = 99660